> * Rui Nuno Capela <[email protected]> wrote:
>
>> After several trials, with CONFIG_PROFILING=y and profile=1
>> nmi_watchdog=2 as boot parameters, I'm almost convinced I'm doing
>> something wrong :)
>>
>> - `readprofile` always just outputs one line:
>>
>> 0 total 0.0000
>>
>> - `readprofile -a` gives the whole kernel symbol list, all with zero
>> times.
>>
>> Is there anything else I can check around here?
>
> it means that the NMI watchdog was not activated - i.e. the 'NMI' counts
> in /proc/interrupts do not increase. Do you have LOCAL_APIC enabled in
> the .config? If yes and if nmi_watchdog=1 does not work either then it's
> probably not possible to activate the NMI watchdog on your box. In that
> case try nmi_watchdog=0, that should activate normal profiling. (unless
> i've broken it via the profile-via-NMI changes ...)
>
I've tried whether having nmi_watchdog has any influence, to no
distinguishable result; readprofile always says zero times. And I'm sure I
have LOCAL_APIC=y (see attached config.gz)
--
rncbc aka Rui Nuno Capela
[email protected]
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